版本:kafka-clients-0.11.0.1.jar
不囉嗦直接看代碼:
package com.z.kafka;
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.Properties;
import org.apache.kafka.clients.consumer.ConsumerConfig;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.apache.kafka.clients.consumer.ConsumerRecords;
import org.apache.kafka.clients.consumer.KafkaConsumer;
import org.slf4j.Logger;
import com.zjb.PropertiesUtil;
public class ConsumerUtil {
private static final String GROUP = "testGrp";
private static final long TIMEOUT_MS = 100;
private static String BROKER_LIST = "127.0.0.1:9092";
private static String DECODER = "org.apache.kafka.common.serialization.StringDeserializer";
private KafkaConsumer<String, String> initConsumer(String grpId) {
Properties pro = new Properties();
pro.setProperty(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, BROKER_LIST);
pro.setProperty(ConsumerConfig.CLIENT_ID_CONFIG, "client_test2");
pro.setProperty(ConsumerConfig.GROUP_ID_CONFIG, grpId);
pro.setProperty(ConsumerConfig.ENABLE_AUTO_COMMIT_CONFIG, "true");
pro.setProperty(ConsumerConfig.AUTO_COMMIT_INTERVAL_MS_CONFIG, "1000");
pro.setProperty(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, DECODER );
pro.setProperty(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, DECODER );
KafkaConsumer<String, String> consumer = new KafkaConsumer<String,String>(pro);
return consumer;
}
public KafkaConsumer<String,String> getConsumer(String topic, String group){
String grp = GROUP;
if(group != null){
grp = group;
}
return initConsumer(grp);
}
public static void main(String[] args) {
String topic = "test_topic";
String group = "test_grp";
System.out.println("topic:{"+topic+"},group:{"+GROUP+"}");
KafkaConsumer consumer = new ConsumerUtil().getConsumer(topic, group);
consumer.subscribe(Arrays.asList(topic));
while (true) {
ConsumerRecords<String, String> records = consumer.poll(100);
for (ConsumerRecord<String, String> record : records){
System.out.println(record.value());
}
}
}
}
實例說明:
消費者參數沒有太多需要操心的,集羣地址配置正確,然後再指定一個消費分組就ok。
有問題的話,歡迎評論區指正。